Abstract

In this work, an experimental analysis of the performance of different types of quasi-randomly distributed reflectors inscribed into a single-mode fiber as a sensing mirror is presented. These artificially-controlled backscattering fiber reflectors are used in short linear cavity fiber lasers. In particular, laser emission and sensor application features are analyzed when employing optical tapered fibers, micro-drilled optical fibers and 50 μm-waist or 100 μm-waist micro-drilled tapered fibers (MDTF). Single-wavelength laser with an output power level of about 8.2 dBm and an optical signal-to-noise ratio of 45 dB were measured when employing a 50 μm-waist micro-drilled tapered optical fiber. The achieved temperature sensitivities were similar to those of FBGs; however, the strain sensitivity improved more than one order of magnitude in comparison with FBG sensors, attaining slope sensitivities as good as 18.1 pm/με when using a 50 μm-waist MDTF as distributed reflector.

Details

Title
Microdrilled tapers to enhance optical fiber lasers for sensing
Author
Perez-Herrera, R A 1 ; Bravo, M 1 ; Roldan-Varona, P 2 ; Leandro, D 1 ; Rodriguez-Cobo, L 3 ; Lopez-Higuera, J M 2 ; Lopez-Amo, M 1 

 Public University of Navarra, Department of Electrical Electronic and Communication Engineering, Pamplona, Spain (GRID:grid.410476.0) (ISNI:0000 0001 2174 6440); Public University of Navarra, Institute of Smart Cities (ISC), Pamplona, Spain (GRID:grid.410476.0) (ISNI:0000 0001 2174 6440) 
 University of Cantabria, Photonics Engineering Group, Santander, Spain (GRID:grid.7821.c) (ISNI:0000 0004 1770 272X); Instituto de Salud Carlos III, CIBER-Bbn, Madrid, Spain (GRID:grid.413448.e) (ISNI:0000 0000 9314 1427); Instituto de Investigacion Sanitaria Valdecilla (IDIVAL), Cantabria, Spain (GRID:grid.476458.c) 
 Instituto de Salud Carlos III, CIBER-Bbn, Madrid, Spain (GRID:grid.413448.e) (ISNI:0000 0000 9314 1427) 
Publication year
2021
Publication date
2021
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2581966558
Copyright
© The Author(s) 2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.